CN108730982B - A kind of closing burning jamb elasticity releasing pressure automatically blast resistance construction - Google Patents

Abstract

The present invention relates to a kind of closing burning jamb elasticity releasing pressure automatically blast resistance constructions, including setting burner inside cavity safe pressure threshold value, by self-relieving method when more than threshold value, and realize the structure of this method, burner cavity is supported on burner frame by spring, and it is sealed with table top pre-pressing, the camber of spring when burner inside cavity pressure increases to pressure release threshold value, burner cavity moves down and work top is fixed, make to generate gap between work top and burner cavity, air-flow is released automatically below table top without influencing article above work top and table top, to prevent the generation of catastrophic explosion, etc. internal pressures release completion, burner cavity automatically replies the normal use in situ without influencing burner under the action of the spring again.

Description

A kind of closing burning jamb elasticity releasing pressure automatically blast resistance construction

Technical field

The present invention relates to a kind of safe practices of enclosed infrared burning jamb, specifically closing burning jamb elasticity certainly Dynamic pressure-relief explosion-proof structure.

Background technique

Gas furnace at present, either air suspended type or infrared-type, are all open burnings, and combustion gas enters logical when furnace chamber Injection suction part primary air is crossed, combustion front burning is arrived at after premix, combustion gas and air inlet are before entering combustion state All be the cold conditions close to room temperature, unless be tempered, generally will not explosion issues, even if being tempered, its is pre- for air suspended type stove Mixed chamber very little, brisance is smaller, and to infrared-type stove, premix chamber is relatively large, but whole power is not very big, and because In open space, the air-flow energy quick pressure releasing of detonation or explosion also will form people though not will form catastrophic effect sometimes It is raw to threaten, but at present all without Compulsory Feature and corresponding solution.But in enclosed infrared burning jamb (such as Closed gas burner described in the Chinese patent of the patent No. 2016102172158), burner cavity is generally in closed State, gas/air air inlet and the exhaust of flue gas can only all be flowed by setting path, if because certain reason causes to be tempered, it is pre- The air blast of mixed chamber can only disorderly go here and there in the cavity, it is likely that serious consequence be formed, so this must be taken into consideration in burner design Kind accidental situation, enables burner to cause internal pressure quickly to be let out automatically when suddenly increasing to some safety margins because of certain reason Pressure avoids that disaster occurs.

Summary of the invention

The object of the present invention is to provide a kind of closing burning jamb elasticity releasing pressure automatically blast resistance constructions.

To achieve the above object, according to an aspect of the present invention, it provides a kind of when burner inside cavity gas pressure is small Pressure relief opening is generated immediately when working normally when secure threshold, and being greater than the threshold value, lets out internal gas quickly below table top The method pressed without influencing article above work top and table top, and realize the burner cavity resilient support and precompressed of this method The structure of compact form sealing.

The specific implementation measure of the method: certain operating pressure is generated in cavity when normal combustion, and is tempered The pressure that explosion time generates is much larger than the operating pressure, therefore can set a maximum admission threshold, and the threshold value is made to be greater than normal work Make pressure much smaller than blast pressure, when internal gas pressure is more than the threshold value by releasing pressure automatically, makes internal detonation or explosion Air-flow quick release；The threshold value should lower than there may be destructiveness damage minimum internal gas pressure, and lower than panel with Attachment force between braced frame, but should be greater than the sealed pressure for avoiding gas to leak when normal combustion.

Gas discharges below table top when to ensure pressure release, and the connection of work top and closed furnace head cavity body is without using fixation Formula connection, and use precompressed compact form to be tightly connected and work top can be born destroys impact force and table top and general frame Fixed force is all larger than secure threshold when opening pressure release, and such user and article are unaffected.

The burner cavity resilient support and precompressed compact form sealing structure, refer to closing burning jamb cavity and braced frame Between connection use elastic construction, tension spring, pressure spring, torsional spring or other type elastic structures can be selected as needed, design On should using multi-point equispaced formula flexibly support, and guarantee elastic structure total support force be equal to closed furnace head cavity body be self-possessed and let out The sum of threshold value is pressed, and the issuable gas pressure of explosion time should be much smaller than.

When releasing pressure automatically occurs, camber of spring, burner cavity is integrally moved down, and connects work top and the sealing of burner cavity There is gap in synapsis, and after internal air under pressure leaks, cavity internal pressure restores normally immediately, and burner cavity is in elastic anchorage force Effect is lower to restore normal condition, i.e. work top and burner cavity is in sealing state again, and burner can continue to use.

Gap very little needed for pressure release, so the pressure release springing stroke of elastic support structure need not be excessive, it is excessive to will lead to back Elastic force increases, and generates greater impact power, brings adverse effect for system.

Due to the needs of pressure release, access burner cavity in need connection, such as air inlet pipe, ignition electrode, probe, exhaust pipe Etc. must all use non-rigid connection, otherwise the or structure that can be moved synchronously in company with burner cause pressure release to be obstructed or break The damage of bad property.

Compared with the prior art, the invention has the advantages that:

Temporarily without the relevant technologies, what which utilized is material property, and high reliablity is realized simply, low in cost.

Detailed description of the invention

Fig. 1 is the basic structure schematic diagram of the embodiment of the present invention one

Fig. 2 is the basic structure schematic diagram of the embodiment of the present invention two

Specific embodiment

Burner cavity (5) tightly withstands glass under the pre torqued power effect of multiple torsionsprings (3) in embodiment one: Fig. 1 Glass table top (1), torsionspring are fixed on burner frame (2), and strength can be used in (2) of glass table top (1) and burner frame Adhesive tape bonding, fixed force should be greater than spring (3) total support force, and all burner cavity (5) internal pipelines (4) that introduce all use Flexible connection.

The torsionspring (3) at least should should make burner there are three supporting point along burner cavity (5) surrounding uniform layout Cavity (5) uniformly pre-pressing glass table top (1) below.

It burner cavity (5) upper end should be using the high-temperature resistant thermal insulating material for having certain deformability, such as alumina silicate or aeroge Braided fabric forms it between glass table top (1) under certain pressure effect and is tightly connected, and internal gas will not be let out from seam crossing Leakage, which is referred to as minimum sealed pressure.

The bigger about outside atmosphere pressure (occurrence is related with system design) of internally fired gas pressure intensity, gas when normal work Body will generate certain operating pressure in contact surface, should make spring (3) that the precompression after its burner cavity (5) be supported to cannot be less than The sum of the operating pressure and minimum sealed pressure, seam crossing will be without gas leakage at this time.

Consider to use the creep of rear spring and burner cavity (5) sealing material possible for a long time, pressure release threshold value is equal to above-mentioned The sum of operating pressure and minimum sealed pressure add creep safety coefficient.

Air-flow is along design channel proper flow when burner works normally, and when burner cavity (5), internal pressure increases simultaneously suddenly When reaching pressure release threshold value, that is, when reaching torsionspring (3) pretightning force, spring (3) generates flexible deformation, and burner cavity (5) will be whole Body moves down, and will occur gap, gas fast leak between glass table top (1) and burner cavity (5), and internal pressure will be released immediately It puts, subsequent burner cavity (5) moves up under the elastic force effect of torsionspring (3) and pressed glass table top, entire burner restore just Often.

Since the attachment force of glass table top (1) and burner frame (2) is greater than pressure release threshold value, and glass table top (1) is in pressure release It will not generate broken under threshold force effect, therefore the people of article and surrounding on table top does not have any danger

The advantages of this programme is reliable performance, and structure is simple, at low cost.

Embodiment two: burner cavity (4) tightly withstands glass table top under the pulling force effect of multiple springs (3) in figure two (1), spring (3) is fixed on burner frame (2) using multi-point equispaced formula, the fixed force of glass table top (1) and burner frame (2) Greater than the total pulling force of spring (3), all internal pipelines (5) for introducing burner cavity (4) are all using flexible connection.

Other aspects of the present embodiment are the same as example 1.

Above-described embodiment is only that the preferred embodiment of the present invention is described, not to the spirit and scope of the present invention It is defined, under the premise of not departing from design philosophy of the present invention, professional and technical personnel in the art are to technical side of the invention The various changes and modifications that case is taken, all belong to the scope of protection of the present invention.

Claims (1)

1. a kind of closing burning jamb elasticity releasing pressure automatically blast resistance construction, including work top (1), burner frame (2), spring (3), burner cavity (5), it is characterised in that: work top (1) is relatively securely connected to burner frame (2) above, spring (3) It is fixed on burner frame (2), burner cavity (5) is supported by spring (3) completely, and when normal use, burner cavity (5) exists The bottom surface of work top (1) is tightly bonded under the action of spring (3), all outlets are discharged along exhaust pipe, when burner cavity It is (5) internal that spring (3), which deforms, causes burner cavity (5) to move down when abnormal pressure occur and increasing and be more than the pre-pressing force of spring, Make gap occur between work top (1) and burner cavity (5), air-flow leaks, pressure abrupt release, the explosion of avoiding damage to property Occur, after burner cavity (5) internal pressure releases, sets back under the rebound effect of spring (3), burner can be just Often work.